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Date: Wed, 29 Jul 2015 15:29:10 -0700
From: tip-bot for Marc Zyngier <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: jiang.liu@...ux.intel.com, linux-arm-kernel@...ts.infradead.org,
lorenzo.pieralisi@....com, linux-kernel@...r.kernel.org,
hpa@...or.com, tglx@...utronix.de, hanjun.guo@...aro.org,
majun258@...wei.com, wangyijing@...wei.com, mingo@...nel.org,
dhdang@....com, jason@...edaemon.net, marc.zyngier@....com,
bhelgaas@...gle.com
Subject: [tip:irq/core] irqchip/gicv3-its:
Get rid of struct msi_controller
Commit-ID: 841514ab41ced765158d71d818b1d564ebe9436d
Gitweb: http://git.kernel.org/tip/841514ab41ced765158d71d818b1d564ebe9436d
Author: Marc Zyngier <marc.zyngier@....com>
AuthorDate: Tue, 28 Jul 2015 14:46:20 +0100
Committer: Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 30 Jul 2015 00:14:38 +0200
irqchip/gicv3-its: Get rid of struct msi_controller
The GICv3 ITS only uses the msi_controller structure as a way
to match the host bridge with its MSI HW, and thus the msi_domain.
But now that we can directly associate an msi_domain with a device,
there is no use keeping this msi_controller around.
Just remove all traces of msi_controller from the driver.
Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Cc: <linux-arm-kernel@...ts.infradead.org>
Cc: Yijing Wang <wangyijing@...wei.com>
Cc: Ma Jun <majun258@...wei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc: Duc Dang <dhdang@....com>
Cc: Hanjun Guo <hanjun.guo@...aro.org>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Jason Cooper <jason@...edaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-14-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
drivers/irqchip/irq-gic-v3-its.c | 38 ++++++++++++++++----------------------
1 file changed, 16 insertions(+), 22 deletions(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 58dc70e..dc4fbbf 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -53,13 +53,12 @@ struct its_collection {
/*
* The ITS structure - contains most of the infrastructure, with the
- * msi_controller, the command queue, the collections, and the list of
- * devices writing to it.
+ * top-level MSI domain, the command queue, the collections, and the
+ * list of devices writing to it.
*/
struct its_node {
raw_spinlock_t lock;
struct list_head entry;
- struct msi_controller msi_chip;
struct irq_domain *domain;
void __iomem *base;
unsigned long phys_base;
@@ -810,7 +809,7 @@ static void its_free_tables(struct its_node *its)
}
}
-static int its_alloc_tables(struct its_node *its)
+static int its_alloc_tables(const char *node_name, struct its_node *its)
{
int err;
int i;
@@ -853,7 +852,7 @@ static int its_alloc_tables(struct its_node *its)
if (order >= MAX_ORDER) {
order = MAX_ORDER - 1;
pr_warn("%s: Device Table too large, reduce its page order to %u\n",
- its->msi_chip.of_node->full_name, order);
+ node_name, order);
}
}
@@ -923,7 +922,7 @@ retry_baser:
if (val != tmp) {
pr_err("ITS: %s: GITS_BASER%d doesn't stick: %lx %lx\n",
- its->msi_chip.of_node->full_name, i,
+ node_name, i,
(unsigned long) val, (unsigned long) tmp);
err = -ENXIO;
goto out_free;
@@ -1354,6 +1353,7 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
struct resource res;
struct its_node *its;
void __iomem *its_base;
+ struct irq_domain *inner_domain = NULL;
u32 val;
u64 baser, tmp;
int err;
@@ -1397,7 +1397,6 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
INIT_LIST_HEAD(&its->its_device_list);
its->base = its_base;
its->phys_base = res.start;
- its->msi_chip.of_node = node;
its->ite_size = ((readl_relaxed(its_base + GITS_TYPER) >> 4) & 0xf) + 1;
its->cmd_base = kzalloc(ITS_CMD_QUEUE_SZ, GFP_KERNEL);
@@ -1407,7 +1406,7 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
}
its->cmd_write = its->cmd_base;
- err = its_alloc_tables(its);
+ err = its_alloc_tables(node->full_name, its);
if (err)
goto out_free_cmd;
@@ -1443,26 +1442,21 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
writeq_relaxed(0, its->base + GITS_CWRITER);
writel_relaxed(GITS_CTLR_ENABLE, its->base + GITS_CTLR);
- if (of_property_read_bool(its->msi_chip.of_node, "msi-controller")) {
- its->domain = irq_domain_add_tree(node, &its_domain_ops, its);
- if (!its->domain) {
+ if (of_property_read_bool(node, "msi-controller")) {
+ inner_domain = irq_domain_add_tree(node, &its_domain_ops, its);
+ if (!inner_domain) {
err = -ENOMEM;
goto out_free_tables;
}
- its->domain->parent = parent;
- its->domain->bus_token = DOMAIN_BUS_NEXUS;
+ inner_domain->parent = parent;
+ inner_domain->bus_token = DOMAIN_BUS_NEXUS;
- its->msi_chip.domain = its_pci_msi_alloc_domain(node,
- its->domain);
- if (!its->msi_chip.domain) {
+ its->domain = its_pci_msi_alloc_domain(node, inner_domain);
+ if (!its->domain) {
err = -ENOMEM;
goto out_free_domains;
}
-
- err = of_pci_msi_chip_add(&its->msi_chip);
- if (err)
- goto out_free_domains;
}
spin_lock(&its_lock);
@@ -1472,10 +1466,10 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
return 0;
out_free_domains:
- if (its->msi_chip.domain)
- irq_domain_remove(its->msi_chip.domain);
if (its->domain)
irq_domain_remove(its->domain);
+ if (inner_domain)
+ irq_domain_remove(inner_domain);
out_free_tables:
its_free_tables(its);
out_free_cmd:
--
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